CN204921196U - Diesel engine EGR system - Google Patents
Diesel engine EGR system Download PDFInfo
- Publication number
- CN204921196U CN204921196U CN201520635147.8U CN201520635147U CN204921196U CN 204921196 U CN204921196 U CN 204921196U CN 201520635147 U CN201520635147 U CN 201520635147U CN 204921196 U CN204921196 U CN 204921196U
- Authority
- CN
- China
- Prior art keywords
- cooler
- egr
- valve
- exhaust gas
- bypass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an engine structural design field, concretely relates to diesel engine EGR system, including the EGR cooler, exhaust manifold flange, EGR valve flange, the EGR valve, the integration has the bypass valve in the air inlet housing of EGR cooler, bypass pipe of bypass valve intercommunication, the direct discharge chamber to the EGR cooler of bypass pipe, integrated temperature sensor on the discharge chamber of EGR cooler, the send a signal ECU of car of temperature sensor, the discharge chamber of EGR cooler passes through EGR valve flange and EGR valve intercommunication, the air inlet housing of EGR cooler passes through exhaust manifold flange and exhaust manifold intercommunication, ECU passes through the vacuum solenoid and controls the bypass valve. The utility model discloses a control the waste gas entering cylinder participation burning that the bypass valve made suitable temperature, improvement engine warming -up process is chronic, the temperature is hanged down and is leaded to the high problem of HC emission in the regional during operation jar of low -speed low -load.
Description
Technical field
The utility model relates to engine structure design field, is specifically related to a kind of diesel engine egr system.
Background technique
Hyundai Motor diesel engine faces more and more stricter emission regulation demands, therefore system or single part on affecting discharge is needed to carry out structure and performance upgrade, need in limited arrangement space, the egr system meeting performance and emission request to be arranged on complete machine, do not change adjacent parts as far as possible and meet the clearance requirement with each adjacent parts, reasonably layout and structural design seem particularly important in discharge upgrading project.The structure of this Highgrade integration is not considered in egr system design in the past, only there is cooled exhaust air and reduce NOx emission effect, there is no the effect of bypass exhaust and monitoring exhaust gas temperature, can because the too low HC of causing of cylinder temperature meet state V emission request at warming-up and low-speed low-load region.
Model utility content
The purpose of this utility model is to solve the problem, and provides a kind of diesel engine egr system.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:
A kind of diesel engine egr system, comprise cooler for recycled exhaust gas, gas exhaust manifold adpting flange, EGR valve adpting flange, EGR valve, bypass valve is integrated with in the suction chamber of cooler for recycled exhaust gas, bypass valve is communicated with a bypass tube, bypass tube is through to the discharge chamber of cooler for recycled exhaust gas, an integrated temperature transducer on the discharge chamber of cooler for recycled exhaust gas, temperature transducer transmits a signal to the ECU of automobile, the discharge chamber of cooler for recycled exhaust gas is communicated with EGR valve by EGR valve adpting flange, the suction chamber of cooler for recycled exhaust gas is communicated with gas exhaust manifold by gas exhaust manifold adpting flange, ECU is controlled bypass valve by vacuum solenoid.
Being arranged in parallel of the cooling tube of bypass tube and cooler for recycled exhaust gas, on the bypass tube in cooler for recycled exhaust gas, cover has heat shield.
The beneficial effects of the utility model are: make the waste gas of suitable temperature enter cylinder to participate in burning by controlling bypass valve, improve that engine warm-up process time is long, the low HC of causing of cylinder temperature discharges high problem when working in low-speed low-load region.
Accompanying drawing explanation
Fig. 1 is the tubular type cooler for recycled exhaust gas structural representation do not improved,
Fig. 2 is cooler for recycled exhaust gas structural representation of the present utility model,
Fig. 3 is the utility model egr system structural representation (not drawing ECU),
In accompanying drawing: 3EGR cooler intake pipe 5EGR cooler outlet pipe 11 gas exhaust manifold 14 vacuum suction tude.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Embodiment: see Fig. 1, Fig. 2, Fig. 3.
A kind of diesel engine egr system, comprise cooler for recycled exhaust gas, gas exhaust manifold adpting flange 1, EGR valve adpting flange 6, EGR valve 13, bypass valve 2 is integrated with in the suction chamber of cooler for recycled exhaust gas, bypass valve 2 is communicated with a bypass tube 8, bypass tube 8 is through to the discharge chamber of cooler for recycled exhaust gas, an integrated temperature transducer 7 on the discharge chamber of cooler for recycled exhaust gas, temperature transducer 7 transmits a signal to the ECU of automobile, the discharge chamber of cooler for recycled exhaust gas is communicated with EGR valve 13 by EGR valve adpting flange 6, the suction chamber of cooler for recycled exhaust gas is communicated with gas exhaust manifold by gas exhaust manifold adpting flange 1, ECU is controlled by vacuum solenoid 12 pairs of bypass valve 2.
Being arranged in parallel of the cooling tube 10 of bypass tube 8 and cooler for recycled exhaust gas, on the bypass tube 8 in cooler for recycled exhaust gas, cover has heat shield 9.
The utility model specification: the bypass valve 2 in cooler for recycled exhaust gas is opened to the actuator 4 of vacuum solenoid 12 instruction by bypass valve by ECU when motor is at warming-up and low-speed low-load region work, waste gas without cooling enters into participation burning in engine aspirating system by bypass tube 8 and EGR valve 13, reduces the object of warm-up period and HC discharge, when motor is at middle-low load engine exhaust by the cooling tube 10 in cooler for recycled exhaust gas after supercooling, enter in gas handling system through EGR valve again and participate in burning, burning quality can be improved, reduce combustion temperature, play the effect reducing nitrogen oxide, in whole working procedure, temperature transducer is all in the temperature of monitoring cooler for recycled exhaust gas outlet, ECU forms closed loop control system with the vacuum solenoid controlling cooler for recycled exhaust gas bypass valve, this egr system meets the limit value requirement of state five Abgasgesetz to HC and NOx by when the reduction of discharging HC in warming-up and low-speed low-load region and middle-low load to the reduction of NOx.
What embodiment of the present utility model announced is preferred embodiment; but be not limited thereto; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present utility model; and make different amplifications and change, but only otherwise depart from spirit of the present utility model, all in protection domain of the present utility model.
Claims (2)
1. a diesel engine egr system, comprise cooler for recycled exhaust gas, gas exhaust manifold adpting flange, EGR valve adpting flange, EGR valve, it is characterized in that: in the suction chamber of cooler for recycled exhaust gas, be integrated with bypass valve, bypass valve is communicated with a bypass tube, bypass tube is through to the discharge chamber of cooler for recycled exhaust gas, an integrated temperature transducer on the discharge chamber of cooler for recycled exhaust gas, temperature transducer transmits a signal to the ECU of automobile, the discharge chamber of cooler for recycled exhaust gas is communicated with EGR valve by EGR valve adpting flange, the suction chamber of cooler for recycled exhaust gas is communicated with gas exhaust manifold by gas exhaust manifold adpting flange, ECU is controlled bypass valve by vacuum solenoid.
2. a kind of diesel engine egr system according to claim 1, is characterized in that: being arranged in parallel of the cooling tube of bypass tube and cooler for recycled exhaust gas, and on the bypass tube in cooler for recycled exhaust gas, cover has heat shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635147.8U CN204921196U (en) | 2015-08-22 | 2015-08-22 | Diesel engine EGR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635147.8U CN204921196U (en) | 2015-08-22 | 2015-08-22 | Diesel engine EGR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921196U true CN204921196U (en) | 2015-12-30 |
Family
ID=54970330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520635147.8U Expired - Fee Related CN204921196U (en) | 2015-08-22 | 2015-08-22 | Diesel engine EGR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921196U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299870A (en) * | 2017-06-06 | 2017-10-27 | 昆明云内动力股份有限公司 | A kind of ERG with by-passing valve |
| CN113464325A (en) * | 2021-08-06 | 2021-10-01 | 无锡同益汽车动力技术有限公司 | Novel EGR cooler |
| CN114320676A (en) * | 2021-12-27 | 2022-04-12 | 重庆长安汽车股份有限公司 | Engine EGR cooling control system and method and vehicle |
-
2015
- 2015-08-22 CN CN201520635147.8U patent/CN204921196U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299870A (en) * | 2017-06-06 | 2017-10-27 | 昆明云内动力股份有限公司 | A kind of ERG with by-passing valve |
| CN113464325A (en) * | 2021-08-06 | 2021-10-01 | 无锡同益汽车动力技术有限公司 | Novel EGR cooler |
| CN114320676A (en) * | 2021-12-27 | 2022-04-12 | 重庆长安汽车股份有限公司 | Engine EGR cooling control system and method and vehicle |
| CN114320676B (en) * | 2021-12-27 | 2024-01-12 | 重庆长安汽车股份有限公司 | Engine EGR (exhaust gas Recirculation) cooling control system, method and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20210822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |